Isn't SD dandruff?? Also, no I"m not sure, that's why I"m asking for opinions! My daughter says they're mostly white flakes, some yellow, so there's a bit more info on that one. But yeah, I give up. I go to the dermatologists, like I've gone to three and they're say it looks clean (my scalp) so they're no help. See my scalp looks clean, until you scratch or rub or comb it, and then that's when the hail storm comes up!! So do you all think more dry scalp??? I notice, though, when I don't wash three days, my hair looks oily and I tend to have more of this stuff, so that's why I thought dandruff.